<button class="pf-c-notification-drawer__group-toggle{{#if notification-drawer-group-toggle--modifier}} {{notification-drawer-group-toggle--modifier}}{{/if}}"
  {{#if notification-drawer-group--IsExpanded}}
    aria-expanded="true"
  {{else}}
    aria-expanded="false"
  {{/if}}
  {{#if notification-drawer-group-toggle--attribute}}
    {{{notification-drawer-group-toggle--attribute}}}
  {{/if}}>
  {{> @partial-block}}
</button>
